Burner.



PATENTED AUG. 30, 190,4P

J. MOFARLANE.

BURNER.

APPLICATION FILED .JULY 23, 1903.

N0 MODEL.

UNITED STATES Patented August 3o, 1904.

PATENT OEETCE, i

JOHN MCFARLANE, OF WASHINGTON, DISTRICT OF COLUMBIA, ASSIGNOR OF ONE-HALF TO GEORGE E. TRUETT, OF WASHINGTON, DISTRICT OF COLUMBIA.

BURNER.

SPECIFICATION forming part of Letters Patent No. 768,816, dated August 30, 1904,

Application filed July 23, 1903. Serial No. 166,731. (No model.)

To all whom ritmo/y concern:

rangement of its parts, as hereinafter shown and described.

The object of my invention is to provide a burner especially adapted for burning hydrocarbon oils; and it consists, primarily, of an `open retort carrying a wick which is suitably supplied with hydrocarbon. The oil is vaporized in said retort and passes under the perforated plate, which acts as a gasitier and a mixer, a suitable number of blades being located under said plate for the purpose of facilitating' the mixing of the said vapor with the air. A second plate is located over the first said plate, said second plate acting as a spreader. and burner for the gas thus produced. Suitable airfeeds are provided for supplying air both to the vapor and the gas.

In the accompanying drawings, Figure 1 is a transverse sectional view of the burner. Fig. 2 is a horizontal sectional view of the burner cut on the line 2 2 vof Fig. 1.

The retort 1 is made circular in form, the open center 2 of which constitutes a vertical air-passage. The upper edge of said retort is provided with a continuous duct 3, which constitutes an oil-retaining gutter o f the retort. bottom of said duct 3 at one or more points. A continuous wick 6 is located in the duct 3, said wick being made of asbestos or any other suitable material and is bound on each vertical side with a perforated ring or plate 7. Said wick is centered in the duct 3 and is of less thickness than the distance between the inner walls of the said duct, the space be- The oil-supply pipe 4 leads into thev the duct being utilized for the reception of oil and the vaporization of the same. The retort 1 is surrounded by an annulus 8, which at its upper edge converges away from the retort and in its bottom is provided suitable stantially in horizontal alinement with the upper edge of the retort. The central airtube 11 passes through the opening in the retort 1, and the plate 12 is Xed to said tube, said tu-be being provided with the perforation 13 just below the plate 12. The upper end of the tube 11 extends above the plate 12 and supports the plate 141, the upper end of said tube being closed and said tube having the perforations 15 just below the plate 14. The' plates 12 and 14 are conveXo-concave, substantially as shown in Fig. 1, the upper plate 14 being imperforated, while the lower plate 12 is' provided with the perforations 16, which are located between the edge of the plate and the elevated closed intermediate portion thereof. The plate 12 is nested within the plate 14. Consequently the edge of the plate 14 passes below the openings 16 of the plate 12.

Any suitable means may be provided for adjusting or regulating the distance between the edge of the plate, 12 and the upper end of the retort 1. As shown, this means consists of a cross-piece 17, having at its middle an internally-screw-threaded section adapted to engage the thread 18 on theexterior of the tube 11'. It will be seen that by revolving said tube 11 the plate 12 and its attachments may be raised or lowered with relation to the retort 1 and its attachments. The inner edge of the plate 12 is beveled, as at 19, and the inner edge of the ring 10 is also beveled, as at 20, and the edge of the retort 1 is beveled, as at 21.

A series of radially-extending blades 22 are located under the plate 20, said blades being preferably formed by stamping out of' a piece of sheet metal and slitting it toward the center .from its edge and then twisting the blade up at the proper angle.

The operation of' the device is as follows: The oil is admitted through the pipe 4 into the duct 3, where it is taken up by the wick 7. YIt is then ignited, and the {iame 'from said wiel; passes up by the blades 22 ag'ainst the under side of the plate 12. The said iiame is fed by air passing through the passage 2 of the said retort 1 and simultaneously by air passing' up through the perforations 10 along the outer side of' the retort 1 and within the annulus 8 and by the inner edg'e of' the ring 10. The said retort 1 being heated, the air comes in contact with thc side thereof' and is expanded and has a tendency to rise with promptness. The space under the inner edge ot' the ring 10 and between the inner wall of' the annulus 8 constitutes an air-cushion which contains cooler air. rlhe lateral pressure of the warm air coming in contact with the aforesaid cushion has a tendency to shunt the warm air over the edge of the retort and under the plate 12, the beveled surfaces 19, 20, and 21 facilitating the passage of' the air under the said plate. The said air coming in contact with the vapor arising from the duct 3 is mixed with the same in passing through the space between the blades 22, and this mixture also mixes in a similar manner with the air that is passing' up through the passage 2. The mixture then produced comes in contact with the under side of the plate 12, where it is heated and the vapor is gasilied. At the same time air is injected into the mixture through the perforation 13 in the pipe 11, and the mixture passes through the perforation 16 in the plate 12 under the plate 14, where it is temporarily held and fed out at the edge of said plate and is ignited, forming a slight bank of' fire. Vhile the mixture is under the plate 14 more air is f'ed to it through the perforations 15 in the pipe 11. It will thus be seen that in stages of transforming the hydrocarbon into a gas it is frequently mixed with air and kept continually in a state of' agitation, and consequently the gas produced contains a sufficient quantity of' air to insure combustion without smoke, soot, or other objectionable features.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, isA

1. In a hydrocarbon-burner a vaporizer, a plate located over the same and adapted to receive against its under side vapor and air, said plate having an elevated, concaved, imperferated, central portion which serves as a mixer for the air and vapor and a second concaved plate located over the first said plate in such position as to serve as a burner for the mixturc.

2. 1u a hydrocarbon-burner a vaporizer, a plate located over the same and adapted to receive against its under side vapor and air, said plate having an elevated, concaved, imperferated, central portion which serves as a mixer for the air and vapor and a second imperf'orated concaved plate located over the first said plate in such position as to serve as a burner for the mixture.

3. In a hydrocarbon-burner a vaporizer, a plate located over the same and adapted to receive against its under side vapor and air, said plate having an elevated, concaved, imperferated, central portion which serves as a mixer for the air and vapor and a second concaved plate located over the first said plate in such position as to serve as a burner for the mixture, the first said plate being' nested in the second said plate.

p 4. In a hydrocarbon-burner a vaporizer, a plate located over the same and adapted to receive against its under side vapor and air, said plate having an elevated, concaved, imperferated, central portion which serves as a mixer for the air and vapor and a second concaved plate located over the first said plate in such position as to serve as a burner for the` mixture and an air-pipe supporting both said plates and having' air-outlets under each.

. In a hydrocarbon-burner a vaporizer, a

plate located over the same and adapted to receive against its under side vapor and air, said plate having an elevated, concaved, imperferated, central portion which serves as a mixer for the air and Vapor and a second concaved plate located over the first said plate in such position as to serve as a burner for the mixture and an air-pipe supporting both said plates and having outlets under each the said outlets under the lower plate being located above the lower line of' the imperf'orated central portion of the plate.

6. In a hydrocarbon-burner a vaporizer, a plate located over the same and adapted to receive against its under side vapor and air, said plate having an elevated, concaved, imperferated, centra-l portion which serves as a mixer for the air and vapor and a second concaved plate located over the first said plate in such position as to serve as a burner for the mixture and an air-pipe supporting both said plates and having outlets under each, said outlets being' located in close proximity to the respective plates.

7. 1n a hydrocarbon-burner having a vaporizer the upper corner of the edge of' which is beveled, a plate located ove'rsaid vaporizer and having a beveled edge opposite the beveled edge of the vaporizer, a ring surround.- ing said vaporizer and having a beveled edge IOO IIO

IIS

opposite the beveled edge ofthe vaporizer, all of said beveled edges extending substantially in the same direction.

8. In a hydrocarbon-burner a vaporizer, a plate located over the same and adapted to receive against its under side vapor and air, said plate having an elevated, Coneaved, imperforated central portion which serves as amixer for the air and vapor, a second plate located over the first said plate in 4such position as to IO serve as a burner for the mixture, and blades located under the first said plate. f In testimony whereof I ax my signature in the presence of two Witnesses.

JOHN MCFARLANE.

Witnesses:

. EARLE B. PRINCE, GEORGE CALVERT. 

